Magnesium in a 2:1 calcium to magnesium ratio for optimal support of bone formation.

Boron a trace mineral which may play a role in maintaining healthy calcium balance through its involvement in estrogen metabolism.

Vitamin D, an essential nutrient for the maintenance of healthy bones.

With Magnesium Boron & Vitamin D. Bone Builder MBD is an excellent, comprehensive bone support formula that features the same calcium-rich MCHC found in original Bone Builder, but with other bone-nourishing nutrients.

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